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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Khalaqa: Journal of Education and Learnig
Maihendra, Maihendra
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Religion Humanities Education Engineering Social Sciences Other

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Kinetika Adsorpsi Pada Penjerapan Ion Timbal Pb2+ Terlarut Dalam Air Menggunakan Partikel Tricalcium Phosphate Maihendra, Maihendra; Fadli, Ahmad; Zultiniar, Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

One of the heavy metals can pollute the water is metal ion of Pb2+. Concentration of ions Pb2+ can be removed by adsorption method. The purposes of tihis research are to observe the effect of temperature and adsorbent dosage on the adsorption of metal ion Pb2+ using tricalcium phosphate (TCP) adsorben and determine a suitable adsorption kinetic model. Five hundred mililiter Pb2+ solution with of 3mg/L were added 0,5 gr, 1 gr and 1,5 gr of TCP in a glass beaker and stirred with rate of 300 rpm at a temperature of 30 oC. Pb solution was taken at a certain time, the solution centrifuged and supernatant analyzed by AAS. The result Showed that rate of adsorption increased with temperature and adsorbent dosage. Minimum constant value of adsorption kinetic of adsorption kinetic was 1,720 g/mg.min obtained at temperature 30oC and adsorbent dosage 0,5 gr. Where as maximun value adsorption kinetic constant 8,479 g/mg.min obtained at temperature 30oC adsorbent dosage 1,5 gr. The appropiate model for kinetic followed pseudo second order.Keyword : Adsorption, Kinetic, Lead (Pb2+), Tricalcium phosphate
Implementation of Active Learning Strategies in Islamic Religious Education for Primary School Students Arifin, Zainul; Febriani, Afifah; Maihendra, Maihendra; Az-zahra, Dwi Wahyuni
Khalaqa: Journal of Education and Learning Vol. 2 No. 2 (2024): Desember
Publisher : Khalaqa: Journal of Education and Learning

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The implementation of the Merdeka Belajar Curriculum in Islamic Religious Education (IRE) faces several challenges, particularly in planning, execution, and evaluation. These issues are evident in the teaching process, where components such as the ATP/Syllabus and Teaching Module/RPP are not optimally utilized, resulting in low student engagement during lessons. This study aims to identify the problems encountered in planning, implementing, and evaluating the curriculum in IRE subjects, as well as to explore teachers’ efforts to address these challenges. Using a qualitative descriptive approach, this field research involved elementary school principals, IRE teachers, other subject teachers, and students as data sources. Data were collected through observation, interviews, and documentation. The findings reveal key issues in planning, such as difficulties in developing ATPs and teaching modules and in implementation, including ineffective use of teaching methods, media, and technology. To overcome these challenges, teachers have introduced various evaluation strategies to improve learning outcomes in elementary schools.
Co-Authors Ahmad Fadli Az-zahra, Dwi Wahyuni Febriani, Afifah Zainul Arifin Zultiniar, Zultiniar